Vacuum ultraviolet laser pulsed field ionization photoelectron studies of polyatomic species: Accurate ionization energies of CH{sub 3}SH and CH{sub 3}CH{sub 2}SH

Journal Article · Sat Aug 01 04:00:00 EDT 1998 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.476753· OSTI ID:639057

Cheung, Y; Huang, J; Ng, C Y ^[1]

---

1. Ames Laboratory, USDOE and Department of Chemistry, Iowa State University, Ames, Iowa 50011 (United States)

The vacuum ultraviolet (VUV) pulsed field ionization photoelectron (PFI-PE) spectra for CH{sub 3}SH and CH{sub 3}CH{sub 2}SH have been obtained near their ionization thresholds. Using a semiempirical simulation scheme, we have obtained satisfactory fits to fine structures resolved in the VUV-PFI-PE spectra, yielding accurate ionization energies of 76thinsp256.3{plus_minus}2.9thinspcm{sup {minus}1} (9.454thinsp58{plus_minus}0.000thinsp36thinspeV) and 74thinsp948.7{plus_minus}2.9thinspcm{sup {minus}1} (9.292thinsp46{plus_minus}0.000thinsp36thinspeV) for CH{sub 3}SH and CH{sub 3}CH{sub 2}SH, respectively. {copyright} {ital 1998 American Institute of Physics.}

• OSTI ID: 639057
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 5 Vol. 109; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FAR ULTRAVIOLET RADIATION
FINE STRUCTURE
IONIZATION POTENTIAL
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION